Update README.md

README.md

@@ -33,3 +33,14 @@ configs:
   - split: val
     path: data/val-*
 ---
+
+Original dataset: `https://github.com/harsh19/spot-the-diff/`
+
+```
+@inproceedings{jhamtani2018learning,
+  title={Learning to Describe Differences Between Pairs of Similar Images},
+  author={Jhamtani, Harsh and Berg-Kirkpatrick, Taylor},
+  booktitle={Proceedings of the 2018 Conference on Empirical Methods in Natural Language Processing (EMNLP)},
+  year={2018}
+}
+```